By Frans A. Oliehoek, Christopher Amato
This publication introduces multiagent making plans below uncertainty as formalized through decentralized partly observable Markov determination approaches (Dec-POMDPs). The meant viewers is researchers and graduate scholars operating within the fields of man-made intelligence concerning sequential determination making: reinforcement studying, decision-theoretic making plans for unmarried brokers, classical multiagent making plans, decentralized keep an eye on, and operations study.
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Additional info for A Concise Introduction to Decentralized POMDPs
If rewards are to be observed, they should be made part of the observation. 3 Example Domains To illustrate the Dec-POMDP model, we discuss a number of example domains and benchmark problems. These range from the toy (but surprisingly hard) ‘decentralized tiger’ problem to multirobot coordination and communication network optimization. 1 Dec-Tiger We will consider the decentralized tiger (D EC -T IGER) problem Nair et al. [2003c]— a frequently used Dec-POMDP benchmark—as an example. It concerns two agents that are standing in a hallway with two doors.
The core idea is to consider the states and transition, observation and reward functions not as atomic entities, but as consisting of a number of factors, and explicitly representing how different factors affect each other. For instance, in the case of a sensor network, the observations of each sensor typically depend only on its local environment. Therefore, it can be possible to represent the observation model more compactly as a product of smaller observation functions, one for each agent. In addition, since in many cases the sensing costs are local and sensors do not inﬂuence their environment there is likely special structure in the reward and transition function.
2004]. This method starts at the last stage, t = h − 1, and works its way back to the ﬁrst stage, t = 0. As such, we say that DP works backwards through time, or is a bottom-up algorithm. At every stage t the algorithm keeps the solutions that are potentially optimal for the remaining stages t, . . , h − 1. This is similar to dynamic programming for (single-agent) MDP [Puterman, 1994, Sutton and Barto, 1998], but in contrast to that setting it will not be possible to represent these solutions using a simple value function over states.